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Posted to hdfs-dev@hadoop.apache.org by "Feilong He (Jira)" <ji...@apache.org> on 2020/05/06 07:45:00 UTC
[jira] [Created] (HDFS-15337) Support available space choosing
policy in HDFS Persistent Memory Cache
Feilong He created HDFS-15337:
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Summary: Support available space choosing policy in HDFS Persistent Memory Cache
Key: HDFS-15337
URL: https://issues.apache.org/jira/browse/HDFS-15337
Project: Hadoop HDFS
Issue Type: Improvement
Components: caching, datanode
Reporter: Feilong He
Assignee: Feilong He
In HDFS-13762, we introduced HDFS Persistent Memory Cache feature. In that implementation, if more than one persistent memory volume is specified by user, a simple round-robin policy is used to pick up a volume to cache data. Evidently, the large difference of volume capacity can lead to imbalance issue.
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